Icebreaker Men's 260 Tech Long Sleeve Half Zip Base Layer review

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All images by and © Hiatus.Design

Cost ★★★☆☆

Performance ★★★★★

Overall Score ★★★★☆

Verdict: A great piece of cold-weather clothing that retains heat even when wet when weight is less of a problem!


The Icebreaker Men's 260 Tech Long Sleeve Half Zip Base Layer is a versatile and reliable mid or base layer designed for cold-weather adventures.

 

Made from 100% merino wool, it offers exceptional warmth, breathability, and a natural stink resistance. These qualities make it ideal for outdoor activities like hiking, fatbiking, or mountaineering, where staying warm and comfortable is essential.

The midweight construction, with a fabric weight of 260 g/m² (hence the name), ensures that this base layer provides excellent insulation without compromising on comfort. Its slim fit, offset shoulder seams, and forward-set side seams are thoughtfully designed to enhance comfort and reduce chafing, especially when worn under a backpack. Additionally, the drop-tail hem provides extended coverage for added protection against the cold.

As a mid-layer, this base layer truly excels when weight is less of a concern, but durability and warmth are important. It’s robust enough to withstand frequent use in harsh environments, making it an excellent choice for multi-day expeditions or extreme conditions. The half-zip design adds an extra layer of versatility, enabling the wearer to regulate body temperature easily during periods of varying activity levels. With a weight of approximately 316 grams for a medium size, it’s slightly heavier than lighter alternatives but offers superior thermal efficiency and resilience.

Beyond performance, Icebreaker underscores its commitment to sustainability and ethical production. The merino wool used in the 260 Tech is sourced responsibly, ensuring high standards of animal welfare and environmental stewardship. The garment is designed for long-term use, maintaining its softness and structural integrity even after numerous washes, which enhances its value for eco-conscious adventurers.

The Icebreaker 260 Tech Long Sleeve is ideal for adventures when you need a dependable layer to keep you warm during slower activities in cold conditions. Whether used as a standalone piece in dry weather or layered under a shell in wetter environments, it delivers comfort, functionality, and durability. For those who prioritise warmth and hardwearing gear without compromising on quality, this mid layer is a standout choice.


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Chris Shirley MA FRGS

About the Author:

Chris is the founder of Hiatus.Design, a strategic branding, design and communications company that works with clients all over the world.

He is a former Royal Marines Commando officer, former risk advisor to the BBC and is a fellow of the Royal Geographical Society (FRGS).

Chris has travelled in over 60 countries, achieved his second Guinness World Record for an Atlantic Ocean rowing expedition, a Marathon des Sables finisher, and has worked with Hollywood actors, world–renowned musical artists and TV personalities.

https://www.hiatus.design
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